Selling the Cottage or Rental in Retirement: Will That One-Year Capital Gain Trigger the OAS Clawback or Cut Your GIS?

The answer depends on one figure: your net income for the year the sale closes. Work out that figure, find which of four income bands it falls in, and you can see what happens to your GIS and OAS and in which July-to-June period.

I’m Arthur Zhao, a real estate broker in Toronto. When a cottage or rental sale closes, the lawyer’s reporting letter arrives and one line stands out: the net amount that went into your account. If you’re 65 or older and receiving Old Age Security, maybe with the Guaranteed Income Supplement as well, the natural question is whether that deposit counts as income.

The deposit itself isn’t what gets measured. The Income Tax Act turns the sale into a smaller number, and that number is added to the rest of your income for the year. The total then falls into one of four bands, and each band has its own consequence for GIS and OAS. This article first shows how the number is built, then goes through the bands from bottom to top. It explains how the rules work and isn’t tax advice for your situation. Your accountant runs the actual figures.

Building the number: what part of the sale counts as income

Four pieces of a property sale matter here, and they don’t count the same way.

• Capital gain. Under ITA s.40(1)(a), the gain is your proceeds of disposition minus the adjusted cost base (ACB) and the outlays and expenses of selling. The sale price on its own isn’t the gain.
• Taxable capital gain. Under ITA s.38(a), as currently in force, half of that gain is taxable. Only this half goes into income.
• Recaptured depreciation. If you claimed capital cost allowance on a rental building, s.13(1) adds any excess that comes out of the class formula at year-end into income in full. The half-rate doesn’t apply to it. Reading the formula plainly, recapture can only come up on depreciable property where CCA was claimed.
• Principal residence portion. Under s.40(2)(b), the gain on a property that was your principal residence for some years is reduced by a formula. The part removed this way isn’t a capital gain and doesn’t go into income.

Add those amounts to your pension and other income for the calendar year and you have the total that the GIS and OAS rules work from. Two related topics have their own articles on this site: how good records set your ACB, and what happens to the exemption when part of a home was rented out.

The four bands

The GIS figures and the OAS figures measure slightly different things, so the two columns don’t line up exactly. More on that in the band 1 section. The dollar figures come from two canada.ca pages: the GIS eligibility page (dated 2026-10-01) and the OAS recovery tax threshold table (dated 2026-09-29).

Band 1: still under the GIS ceiling

GIS works on payment periods. Under the Old Age Security Act, s.2, a payment period runs from July 1 to June 30. Under s.10, the base calendar year is the last calendar year that ends before that period. So the sale year is the base year for the payment period that starts the following July. For a 2026 sale, that means July 2027 to June 2028.

GIS uses its own definition of income. Section 2 starts from income computed under the Income Tax Act, then takes out the OAS benefits themselves (paragraph (c)) and gives a deduction on employment and self-employment earnings. The definition has no special deduction for capital gains, so the taxable half of the gain counts in full.

If the total still stays under the ceiling, GIS continues. The Act reduces the supplement as base-year income goes up, so the cheques in that payment period will be smaller. In July, Service Canada sends a letter after its annual review of your tax return. One of the possible results the letter lists is renewed (with the new amount).

Band 2: over the GIS ceiling, under the OAS recovery threshold

According to Service Canada’s GIS eligibility page, the annual income limits are: under $23,112 for a single, divorced or widowed person; under $30,528 combined if your spouse or common-law partner receives the full OAS pension; under $42,768 combined if your partner receives the Allowance; and under $55,392 combined if your partner doesn’t receive OAS.

If the sale lifts the year’s income above the limit that applies to you, you don’t qualify for GIS in the payment period that uses that year as its base. GIS is nil for those twelve months. OAS is a separate program measured against a much higher line. In this band, the OAS pension continues in full and no recovery tax applies.

After that period ends, the next payment period uses the next calendar year as its base. Your eligibility is worked out again from that year’s income, and the sale year no longer counts.

Band 3: over the minimum OAS recovery threshold

This band is governed by Part I.2 of the Income Tax Act. Section 180.2(2) sets the tax as the lesser of (a) the OAS benefits included in your income for the year, and (b) 15% of your adjusted income above $50,000. The $50,000 is indexed to inflation every year, because s.117.1(2)(t) includes every dollar amount in Part I.2. According to the Canada Revenue Agency’s Line 23500 guidance, the figure for the 2025 tax year is $93,454. The canada.ca threshold table lists $95,323 for the 2026 income year.

Adjusted income (s.180.2(1)) is your Part I income with a short list of exclusions. A taxable capital gain from selling a cottage or rental isn’t on that list, and neither is recapture, so both count.

Here is an illustration of the arithmetic only. Suppose adjusted income for 2025 were $120,000. The amount over the line is $26,546, and 15% of that is $3,981.90. You would repay that amount, or the OAS you actually received in 2025 if that is smaller.

That tax is due with your return for the sale year. Then a second step starts. Under s.180.2(3) and (4), each monthly OAS payment has an amount withheld, worked out from a base taxation year. For January–June payments, the base year is the year two calendar years earlier. For July–December payments, it is the previous year. So the sale year becomes the base for the twelve payments from the following July through the next June. The canada.ca table shows the same pattern: 2025 income drives July 2026 to June 2027.

Band 4: over the maximum threshold

Because s.180.2(2) takes the lesser of two amounts, the recovery tax can never be more than the OAS you received that year. Once 15% of the excess equals your OAS for the year, every extra dollar of income changes nothing, because the whole pension is already being repaid. The canada.ca table shows where that happens for the 2025 income year: $152,062 for people aged 65–74 and $157,923 for people 75 and older. For the 2026 income year, the page gives $155,320 and $161,320, and marks both as estimates.

In this band, the sale-year return settles a recovery tax equal to that year’s full OAS. Under the s.180.2(4) withholding formula, the amount withheld each month is capped at the payment itself. So for the twelve months that use the sale year as their base, the amount withheld can equal the whole monthly payment. GIS is nil, as it is in bands 2 and 3.

The estimated-income option, and why a sale doesn’t qualify

The Old Age Security Act has one way to have GIS worked out on a lower, estimated income instead of base-year income. Section 14(2) to (6) allows an extra statement of estimated income only in specific cases: you or your spouse stopped working or stopped carrying on a business, or pension income stopped or was reduced. Service Canada’s page on receiving GIS describes the same two cases.

A capital gain from a one-time sale isn’t on that list. Nothing in these subsections lets a year with a sale be swapped for an estimate. So for GIS purposes, the sale year counts as a full base year for one payment period.